add alt text to embedded image

1 files changed, 12 insertions, 1 deletions

diff --git a/report.qmd b/report.qmd
index 00cb5d7..fff147e 100644
--- a/report.qmd
+++ b/report.qmd
@@ -48,8 +48,19 @@ filters:
   - nobreaks
   - include-code-files
 
-# fix british spelling of "licence", and append link to published source
 include-in-header:
+# add alt text to embedded image, to aid non-visual rendering
+- text: |
+    \renewcommand{\doclicenseImage}[1][]{%
+      \setkeys{doclicense}{#1}
+      \href{\doclicenseURL}{%
+        \includegraphics[
+          alt=\doclicenseText%
+          width=\doclicense@imagewidth%
+        ]{\doclicenseImageFileName}%
+      }
+    }
+# fix british spelling of "licence", and append link to published source
 - text: |
     \makeatletter
     \@namedef{doclicense@lang@word@license}{ licence.\\